Features: 1With a large LCD display can be used to accurately measure small linear distances in machinery and industrial processes without reading errors which is a perfect tool for machinery industrial processes and laboratories 2Included removable back cover possess 5.7mm diameter can be used for different magnetic base brackets 3Inch/metric conversion-can switch between millimeters and inches suitable for various measurements 4Zero setting with convenient portRS232 data output interface and LR44 battery compartment battery can be replaced eastward 5Possess measuring range from 0 to 12.7mm high resolution up to 0.01 mm (0.0005in) Specification: Item Type: Digital IndicatorSize: Approx. 5.7 x 12.5cm / 2.2 x 4.9inBattery Type: Button batteryBattery Model: LR44Nominal Battery Capacity (unit: MAh): 160Range: Approx. 12.7mm / 0.5inAccuracy: 0.01mmScope of Application: Industrial production mechanical maintenance scientific research experiments daily teachingBack Cover Diameter: Approx. 5.7mm / 0.2in Package List: 1 x Digital Indicator1 x Back Cover1 x User Manual Note: 1. Please allow tiny size error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.